Russia fired 30 cruise missiles into the Yavoriv military base at 5.45am, the day after Putin warned the West that convoys carrying weapons from NATO would be legitimate targets.
The attack just six miles from NATO member Poland was a terrifying step change that brought the West closer to a military confrontation with Moscow.
Russian opposition politician Leonid Volkov, ex-chief of staff for jailed Kremlin critic Alexei Navalny, warned Putin was “crazy enough” now to use nuclear weapons.